diff --git a/src/clientP2P/ClientManagementUDP.java b/src/clientP2P/ClientManagementUDP.java
index 3b8a811..445bbea 100644
--- a/src/clientP2P/ClientManagementUDP.java
+++ b/src/clientP2P/ClientManagementUDP.java
@@ -125,6 +125,7 @@ public class ClientManagementUDP implements Runnable {
 					throw new ProtocolError();
 				}
 				if (fp.getOffset() != 0 || fp.getPartialContent().length != fp.getTotalSize()) {
+					System.err.println("offset: " + fp.getOffset() + " ; content.length: " + fp.getPartialContent().length + " ; totalSize: " + fp.getTotalSize());
 					System.err.println("Error: cannot handle partial files (not implemented)");
 					throw new InternalError();
 				}
diff --git a/src/protocolP2P/FilePart.java b/src/protocolP2P/FilePart.java
index 32deb5f..b2d539a 100644
--- a/src/protocolP2P/FilePart.java
+++ b/src/protocolP2P/FilePart.java
@@ -163,7 +163,7 @@ public class FilePart extends Payload {
 		int start = 28 + getFilenameSize(datagram); // this can throw SizeError or ProtocolError
 		int end = 8 + getPayloadSize(datagram); // this can throw SizeError
 		try {
-			partialContent = Arrays.copyOfRange(datagram, start, end+1);
+			partialContent = Arrays.copyOfRange(datagram, start, end);
 		} catch (ArrayIndexOutOfBoundsException e) {
 			throw new ProtocolError();
 		}
diff --git a/src/protocolP2P/ProtocolP2PDatagram.java b/src/protocolP2P/ProtocolP2PDatagram.java
index caa8874..744c5e8 100644
--- a/src/protocolP2P/ProtocolP2PDatagram.java
+++ b/src/protocolP2P/ProtocolP2PDatagram.java
@@ -78,6 +78,13 @@ public class ProtocolP2PDatagram {
 		socket.send(datagramPacket);
 	}
 
+	/** Send a response.
+	 * @param socket	DatagramSocket used to send response
+	 * @param host	host to send response
+	 * @param port	port to send response
+	 * @throws	InternalError
+	 * @throws	IOException
+	 */
 	protected void sendResponse(DatagramSocket socket, InetAddress host, int port) throws InternalError, IOException {
 		assert port != 0 && host != null : "This method should be used only as response to a request";
 		if (port == 0 || host == null) {
diff --git a/src/tools/BytesArrayTools.java b/src/tools/BytesArrayTools.java
index 9547f64..3813349 100644
--- a/src/tools/BytesArrayTools.java
+++ b/src/tools/BytesArrayTools.java
@@ -23,8 +23,8 @@ public class BytesArrayTools {
 	 * @param value	long to write
 	 */
 	public static void write(byte[] array, int start, long value) {
-		for(int i=0;i<4;i++) {
-			array[start + i] = (byte) ((value >> (8 * (4 - i))) & 0xFF);
+		for(int i=0;i<8;i++) {
+			array[start + i] = (byte) ((value >> (8 * (7 - i))) & 0xFF);
 		}
 	}
 
@@ -36,7 +36,7 @@ public class BytesArrayTools {
 	public static int readInt(byte[] array, int start) throws SizeError {
 		int size = 0;
 		for(int i=0;i<4;i++) {
-			size |= ((int)array[start + i]) << (8* i);
+			size |= ((int)array[start + i]) << (8* (3 -i));
 		}
 		if (size < 0) {
 			// Size in array is probably correct
@@ -53,7 +53,7 @@ public class BytesArrayTools {
 	public static long readLong(byte[] array, int start) throws SizeError {
 		long size = 0;
 		for(int i=0;i<8;i++) {
-			size |= ((int)array[start + i]) << (8* i);
+			size |= ((int)array[start + i]) << (8* (7 - i));
 		}
 		if (size < 0) {
 			// Size in array is probably correct